--- title: "Sunova TS-BGT54(425) 425W Solar Panel - Specs & Review | ComparePV" description: "Sunova TS-BGT54(425) 425W solar panel. Specs: 21.80% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/sunova-ts-bgt54-425" updated: 2026-09-11 --- # Sunova TS-BGT54(425) Middle of its segment, heavy for its output 321 panels in the segment N-type 400-450 W ## Identity - **Manufacturer:** Sunova - **Model:** TS-BGT54(425) - **Series:** TS-BGT54 - **Rated power:** 425 W - **Cell technology:** N-type - **Bifacial:** yes ## How it compares Compared against segment N-type 400-450 W (321 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 425 W | 430 W | Typical | | | Module efficiency | 21.80% | 21.91% | Typical | 7,022 | | Power density | 217.6 | 218.3 | Typical | 7,172 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 24.2 kg | 22.0 kg | Weak - bottom 12% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.80% | 21.91% | Typical | 7,022 | | Power density | 217.6 | 218.3 | Typical | 7,172 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 56.9 | 51.2 | Weak - bottom 12% | 10,941 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **56.9 kg per kWp** - Bottom 12% of the N-type 400-450 W segment, against a median of 51.2. - **Best for:** Residential, commercial and cold-climate. - **Not ideal for:** Weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 425 W - **Efficiency:** 21.80 % - **Voltage at Pmax (Vmp):** 32.67 V - **Current at Pmax (Imp):** 13.01 A - **Open-circuit voltage (Voc):** 38.59 V - **Short-circuit current (Isc):** 13.64 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.280 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** N-type - **Cell count:** 108 - **Bifacial:** yes - **Bifacial gain:** 13.50 ### Physical - **Length:** 1722 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 24.2 kg - **Area:** 1.95 m2 - **Power density:** 217.6 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 371 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 7022 of 14005 | | Power density | 7172 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 10941 of 14005 | | Warranty | 21 of 14005 | ## About this series The Sunova TS-BGT54 series are modern, **bifacial** modules with a **dual glass** construction, designed to maximize energy output from the same surface area and operate reliably for years in demanding climates. The use of **N-type cells in TOPCon technology** helps to minimize losses typical of older solutions and improves performance, especially in low-light conditions - winter, mornings, evenings, and cloudy days. Bifaciality also allows for the additional use of reflected light from the ground, which can significantly increase production in locations where the roof or ground has a brighter finish or snow is present. Dual glass enhances resistance to moisture, temperature changes, and micro-cracks, making TS-BGT54 well-suited for installations in harsh conditions and where long-term reliability is crucial. It is a good choice for homes, businesses, and C&I projects that prioritize **high efficiency**, durability, and predictable performance without compromising. ## Notable figures - Efficiency of 21.8% matches the \*\*N-type 400-450W\*\* median - Power density of 217.6 W/m² matches the \*\*N-type 400-450W\*\* median - Temperature coefficient of -0.29%/°C matches the \*\*N-type 400-450W\*\* median - Weight of 24.2 kg is 2.2 kg above \*\*N-type 400-450W\*\* median (22.0 kg) - verify structural support - Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof ## Questions ### How does the Sunova TS-BGT54 differ from standard monofacial panels? TS-BGT54 modules are bifacial, meaning they generate power from both the front and rear side. This allows them to capture additional reflected light from the roof, ground, or snow, which under favorable mounting conditions can boost energy yield by up to several percent compared to a classic monofacial panel of the same 425 Wp rating. ### What is N-type TOPCon technology in the TS-BGT54, and does it bring real benefits? TOPCon is an N-type cell technology that reduces energy losses typical of older P-type cells and performs better under low-light conditions such as winter, mornings, or cloudy days. In practice this means higher module efficiency, lower power degradation over time, and more stable annual yields than cheaper panels built on older PERC technology. ### What warranty does Sunova offer on the TS-BGT54 series, and what does it cover? The manufacturer provides a 15-year product warranty against material and workmanship defects, plus a 30-year power output warranty guaranteeing a high level of module performance throughout that period. This is longer than the market standard from a few years ago and reflects the durability of the dual-glass design and the quality of the N-type cells. ### Can the dual-glass construction of the TS-BGT54 handle harsh weather conditions? Yes, dual glass replaces the standard backsheet with a second layer of tempered glass, significantly improving resistance to moisture, temperature swings, and micro-cracking of the cells. This construction handles snow load, strong wind, and large temperature swings well, making it suitable for both residential roofs and larger C&I installations. ### How much real-world output can a Sunova TS-BGT54 425 Wp panel deliver on a typical roof in Poland? The 425 Wp maximum power rating is measured under STC conditions, and actual output depends on irradiance, roof tilt, and azimuth. Thanks to bifaciality and TOPCon technology, the panel maintains relatively high yields even in weaker light, so in practice it can produce more annual energy than a classic monofacial panel of the same nominal power, especially on light-colored roofs or ground-mounted arrays. ### Is Sunova a reliable manufacturer given it's not a Tier 1 company? Sunova (now also operating under the Thornova Solar brand) is not on the Tier 1 list, a classification based mainly on the scale of bank financing rather than product quality. The company is headquartered in China and offers modules with advanced N-type TOPCon technology and dual-glass construction, backed by a long 15/30-year warranty that reflects confidence in the TS-BGT54 series' durability. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/ts-bgt54-425-440-all-black-0d8a9dd8dff0.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Maxeon SPR-MAX7-475](https://comparepv.com/panel/maxeon-spr-max7-475) | 475 W | +50 W, +2.2 pp, +10 yr warranty | | [Just Solar JST-EDMH-(445-465)W-TD (465W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-465w-class) | 465 W | +40 W, lighter, +2.0 pp | | [JA Solar JAT54S40-475/LR](https://comparepv.com/panel/ja-solar-jat54s40-475-lr) | 475 W | +50 W, lighter, +2.0 pp | | [Tongwei TWMNH-48HW475](https://comparepv.com/panel/tongwei-solar-twmnh-48hw475) | 475 W | +50 W, +2.0 pp | | [Astronergy CHSM48RN(DG)/F-BH-475](https://comparepv.com/panel/astronergy-chint-new-energy-technology-co-ltd-chsm48rn-dg-f-bh-475) | 475 W | +50 W, +2.0 pp | | [AIKO AIKO-A475-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a475-mce54mw) | 475 W | +50 W, lighter, +2.0 pp | | [AIKO AIKO-A475-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a475-mah54mw) | 475 W | +50 W, cooler, +2.0 pp | | [Sunova TS-BW54(400)](https://comparepv.com/panel/sunova-ts-bw54-400) | 400 W | Hotter, -1.3 pp, -5 yr warranty | | [Sunova TS-BG54(405)-X](https://comparepv.com/panel/sunova-ts-bg54-405-x) | 405 W | -20 W, hotter, -1.1 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +85 W, cooler, +3.2 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +70 W, lighter, +3.0 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +80 W, cooler, +2.9 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +65 W, lighter, +2.7 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +75 W, cooler, +2.7 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +75 W, cooler, +2.7 pp | --- Source: https://comparepv.com/panel/sunova-ts-bgt54-425 Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.